CVE-2026-39820

high
Published 2026-05-07 · Modified 2026-05-11
CVSS v3
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v2
VIR risk
7.5

Description

Well-crafted inputs reaching ParseAddress, ParseAddressList, and ParseDate were able to trigger excessive CPU exhaustion and memory allocations.

Predictions

Exploit likelihood
83%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2026-39820.html

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-39820

vendor Authored 2026-05-27

Vendor advisory: security@golang.org — https://pkg.go.dev/vuln/GO-2026-4986

vendor Authored 2026-05-27

Vendor advisory: security@golang.org — https://go.dev/cl/759940

OS impact

OSVersionStatusFixed in
debian debianbullseyeaffected
debian debianbookwormaffected
debian debiantrixieaffected
debian debianforkyfixed1.25.10-1
debian debiansidfixed1.25.10-1
suse slesaffected

Package impact

EcosystemPackageVulnerableFixed
golang Gostdlib>=1.26.0-0,<1.26.31.25.10

Application impact

VendorProductVersionsFixed
golang golanggo{"endExcluding":"1.25.10"}1.25.10
gcp googlegcp

References

CWEs

CWE-770

Verify integrity in audit chain (admin only). AS-IS.